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January 19th, 2026 :: 6:54 am CST   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated January 19th at 5:54 am 
Temperature:7°F Dew Point:-2°F
Barometer:30.18 inHg Wind:N 43 Mph
Humidity:58.4% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Jan 19th
Tuesday
Jan 20th
Wednesday
Jan 21st
Thursday
Jan 22nd
Friday
Jan 23rd
Cloudy Cloudy Cloudy Cloudy Cloudy
14°F
28°F
13°F
37°F
31°F
29°F
23°F
15°F
-2°F
 
 Decatur Detailed Weather Forecast  
 
Monday, January 19th, 2026
Morning Temperature: 9°F
Sunny. Windy.
Afternoon Temperature: 12°F
Sunny. Windy at times.
Evening Temperature: 13°F
Cloudy.
Tuesday, January 20th, 2026
Overnight Temperature: 13°F
Clear with cloudy periods.
Morning Temperature: 23°F
Cloudy.
Afternoon Temperature: 22°F
A mix of cloud and sun.
Evening Temperature: 27°F
Cloudy. Windy at times.
Wednesday, January 21st, 2026
Overnight Temperature: 32°F
Cloudy. Windy.
Morning Temperature: 36°F
Sunny with cloudy periods. Windy.
Afternoon Temperature: 31°F
Sunny. Windy at times.
Evening Temperature: 33°F
A mix of cloudy and clear skies. Windy.
Thursday, January 22nd, 2026
Overnight Temperature: 24°F
A mix of cloudy and clear skies. Windy at times.
Morning Temperature: 26°F
Cloudy. Windy at times.
Afternoon Temperature: 27°F
Mostly cloudy.
Evening Temperature: 25°F
Cloudy. Windy at times.
Friday, January 23rd, 2026
Overnight Temperature: 12°F
Cloudy. Windy.
Morning Temperature: 4°F
Cloudy. Windy.
Afternoon Temperature: 1°F
Cloudy. Windy at times.
Evening Temperature: -1°F
Cloudy. Windy at times.
Saturday, January 24th, 2026
Overnight Temperature: -1°F
Cloudy.
Morning Temperature: 6°F
Cloudy.
Afternoon Temperature: 10°F
Cloudy.
Evening Temperature: 10°F
Cloudy.
Sunday, January 25th, 2026
Overnight Temperature: 9°F
Clear with cloudy periods.
Morning Temperature: 13°F
Sunny.
Afternoon Temperature: 14°F
Sunny.
Evening Temperature: 11°F
Clear.
Monday, January 26th, 2026
Overnight Temperature: 10°F
Clear.
Morning Temperature: 23°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 28°F
Sunny. Windy at times.
Evening Temperature: 29°F
Cloudy. Windy at times.
Tuesday, January 27th, 2026
Overnight Temperature: 27°F
A mix of cloudy and clear skies. Windy at times.
Morning Temperature: 32°F
Cloudy. Windy at times.
Afternoon Temperature: 29°F
Cloudy.
Evening Temperature: 28°F
Cloudy. Windy at times.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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